title: Construction and characterization of a cDNA library from shark regenerated hepatic tissue.
abstract: Sharks are a type of fish with a full cartilaginous skeleton and have big livers. To better understand liver regeneration in sharks and screening for the important genes participated in disease-defense, in this study, a cDNA library of regenerated liver tissues of shark, Chiloscyllium plagiosum, was constructed. A total of 2103 expressed sequence tags (ESTs), which represents 997 unique genes, were sequenced. Among these genes, 434 (43.53%) of them showed significant similarity (E-values < 10⁻⁵) to the sequences in NCBI Nt database, 685 (68.71%) of these unique genes showed significant similarity (E-values < 10⁻⁵) to the sequences in NCBI Nr database, and 662 (66.40%) of these unique genes showed significant similarity (E-values < 10⁻⁵) to the Swiss-Prot database. Preliminary analysis of unique genes according to COG database showed that unigenes were further grouped into 21 functional categories including inorganic ion transport and metabolism, energy production and conversion, posttranslational modification, protein turnover and chaperones, general function prediction only, translation, and ribosomal structure and biogenesis. Several possible candidate genes involved in liver regeneration were selected to analyze their expression with relative quantification real-time PCR. This study may contribute to our better understanding of the molecular mechanism of regeneration in shark liver. Furthermore, the EST cataloguing and profiling of shark will be also benefited to the functional genomic research in this marine species.
authors.affiliation: School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhou
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Yue
authors.initials: Y
authors.lastname: Guan
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Xu
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Gao
authors.forename: Wutong
authors.initials: W
authors.lastname: Wu
authors.forename: Boping
authors.initials: B
authors.lastname: Ye
mesh_terms: D000818:Animals; D001483:Base Sequence; D016000:Cluster Analysis; D004247:DNA / Q000737:chemistry / Q000235:genetics; D020224:Expressed Sequence Tags; D015723:Gene Library; D008115:Liver Regeneration / Q000502:physiology*; D058977:Molecular Sequence Annotation; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D012754:Sharks / Q000235:genetics*
chemical_list: D004247:DNA